Brake rotor friction

randygrein at comcast.net randygrein at comcast.net
Thu Aug 9 12:55:48 PDT 2007


Wow! So we were on the right track, just hadn't thought of bent parts. (grin)

You may want to get the part(s) straightened...

Randy Grein, WMRRA #41
 -------------- Original message ----------------------
From: "Erik Weber" <yoober at gmail.com>
> Randy, I had my bike in the shop yesterday and someone much smarter
> than me figured out the problem.
> 
> My front wheel was basically whacked out of alignment and was being
> pushed over to the side by either a slightly bent fork or maybe bent
> triple clamps. Also the wheel bearings were slightly pushed out making
> the problem worse.
> 
> What was happening was that my caliper itself, not the pads, was
> rubbing on the rotor on one side! It could have developed into a
> dangerous situation, as the caliper studs that poke out and were
> scraping were coming perilously close to the grooves in the rotor.
> 
> Getting the wheel closer to straight has evened out the caliper
> clearances. The pads still scrape a little but it's a world of
> difference now.
> 
> Thanks,
> Erik
> 
> On 6/24/07, Randy Grein <randygrein at comcast.net> wrote:
> > Eric,
> > I've had a lot of variance when changing wheels. What seems to help
> > is to put the bike back on the stands, loosen the caliper bolts and
> > tap the brake lever several times while spinning the wheel. Then
> > apply the brake lever and hold it while tightening the caliper bolts.
> > This seems to get the calipers seated more exactly; may or may not
> > help with your noise problem.
> > Randy Grein, WMRRA #41
> >
> > On Jun 23, 2007, at 6:35 PM, Erik Weber wrote:
> >
> > > Well, that makes me feel slightly better. :) But it bothers me that
> > > all I did was take the wheels off and have new tires mounted and they
> > > got worse. I was wondering if something could stop them from releasing
> > > 100%.
> > >
> > > On 6/23/07, Ernest Montague <afm199 at earthlink.net> wrote:
> > >> dunno but they are scrapy ass loud pads for sure.
> > >>
> > >> On Jun 23, 2007, at 4:52 PM, Erik Weber wrote:
> > >>
> > >> > I have a 2001 SV650S. I have the RJLs on the front, and they are
> > >> > probably thicker than normal, so I never thought too much about the
> > >> > fact that they scrape a little on the rotors and there is some
> > >> sound
> > >> > there (with no brake lever pressure). Since the bike will still do
> > >> > around 130 I figured how much could it matter and it keeps the
> > >> rotors
> > >> > clean. :) Today I had the wheels off and now after I have put them
> > >> > back on, they are scraping a lot more, to the point where when I'm
> > >> > coasting someone is going to notice it. I did some laps and it
> > >> was OK
> > >> > but what is wrong?
> > >> >
> > >> > Thanks,
> > >> > Erik
> > >> >
> > >>
> > >>
> > >
> >
> >
> 



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